Erysimum suffrutescens

(Abrams) Rossbach

Aliso 4: 121. 1958.

Endemic
Basionym: Cheiranthus suffrutescens Abrams Bull. S. Calif. Acad. Sci. 2: 41. 1903
Synonyms: Erysimum concinnum subsp. suffrutescens (Abrams) Abrams Erysimum suffrutescens var. grandifolium Rossbach
Treatment appears in FNA Volume 7. Treatment on page 544. Mentioned on page 535, 545.

Perennials or subshrubs. Trichomes of leaves 2-rayed, sometimes mixed with 3-rayed or 4-rayed ones. Stems ascending, proximal branches terminating in sterile rosettes, (woody at base), 1.5–8.1 dm. Basal leaves: blade linear to linear-oblanceolate, 3.7–15 cm × 1.5–6 (–7) mm, base attenuate, margins usually entire, rarely sparsely denticulate, apex acute. Cauline leaves (distal) sessile; blade similar to basal. Racemes considerably elongated in fruit. Fruiting pedicels ascending, slender, narrower than fruit, (3–) 5–10 mm. Flowers: sepals oblong to linear-oblong, 6–11 mm, lateral pair saccate basally; petals yellow, obovate to suborbicular, (11–) 14–20 (–22) × (3–) 4–11.5 mm, claw 8–13 mm, apex rounded; median filaments 7–11 mm; anthers linear, 2.5–4 mm. Fruits ascending to spreading, narrowly linear, straight or only slightly curved inward, not torulose, (2–) 3–8.4 (–11) cm × 1.5–2.4 (–3.5) mm, 4-angled to only slightly latiseptate, not striped; valves with prominent midvein, pubescent outside, trichomes 2–4-rayed, glabrous inside; ovules 48–82 per ovary; style cylindrical, stout, 0.5–4 mm, sparsely pubescent; stigma slightly 2-lobed, lobes as long as wide. Seeds oblong, 1.5–2.5 (–3) × (0.7–) 1–1.2 (–1.4) mm; not winged or winged apically. 2n = 36.


Phenology: Flowering Dec–Aug.
Habitat: Stabilized coastal sand dunes, coastal scrub vegetation
Elevation: 0-150 m

Discussion

Erysimum suffrutescens is restricted to the coastal regions of Los Angeles County northward into San Luis Obispo, Santa Barbara, and Ventura counties. Both G. B. Rossbach (1958, 1958b) and R. C. Rollins (1993) treated it as a distinct species, but R. A. Price (1993) transferred it (invalidly) to a subspecies of E. insulare. The latter species has angustiseptate (versus 4-angled to slightly latiseptate) fruits, and the two are sufficiently distinct to be recognized as independent species.

Selected References

None.

Lower Taxa

None.

"wide" is not a number."dm" is not declared as a valid unit of measurement for this property."elongated" is not a number."narrower" is not a number."thick" is not a number.

... more about "Erysimum suffrutescens"
linear +  and oblong +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
rounded +  and acute +
Ihsan A. Al-Shehbaz +
(Abrams) Rossbach +
not +  and rosulate +
attenuate +
Cheiranthus suffrutescens +
appendaged +  and unappendaged +
0.6 cm6 mm <br />0.006 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
not auriculate +
3.7 cm37 mm <br />0.037 m <br /> (15 cm150 mm <br />0.15 m <br />) +
pinnatisect +, pinnatifid +, denticulate +  and sinuate-dentate +
linear;linear-oblanceolate +
much smaller +  and reduced +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
urceolate +, campanulate +  and tubular +
branched +  and simple +
well-developed +
distinct +
0.8 cm8 mm <br />0.008 m <br /> (1.3 cm13 mm <br />0.013 m <br />) +
differentiated +
emarginate +  and entire +
0-150 m +
straight +  and curved +
not winged +  and unappendaged +
connate +  and distinct +
tetradynamous +
8.4 cm84 mm <br />0.084 m <br /> (11 cm110 mm <br />0.11 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
0.24 cm2.4 mm <br />0.0024 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
not striped +
curved +, straight +  and linear +
3 cm30 mm <br />0.03 m <br /> (8.4 cm84 mm <br />0.084 m <br />) +
ascending +  and spreading +
4-angled +  and not torulose +
slender +
0.5 cm5 mm <br />0.005 m <br /> (1 cm10 mm <br />0.01 m <br />) +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.24 cm2.4 mm <br />0.0024 m <br />) +
latiseptate +  and unsegmented +
angustiseptate +, terete +  and 4-angled +
Stabilized coastal sand dunes, coastal scrub vegetation +
sessile +  and petiolate +
alternate +, not +  and rosulate +
cauline +  and basal +
connate +  and distinct +
decurrent +
denticulate +
0.7 cm7 mm <br />0.007 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
tenuinucellate +, crassinucellate +  and bitegmic +
campylotropous +  and anatropous +
2 cm20 mm <br />0.02 m <br /> (2.2 cm22 mm <br />0.022 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
14mm;20mm +
rudimentary +
obovate +  and suborbicular +
0.4 cm4 mm <br />0.004 m <br /> (1.15 cm11.5 mm <br />0.0115 m <br />) +
Flowering Dec–Aug. +
trinucleate +  and 3(-11)-colpate +
spreading +, horizontal +, reflexed +, ascending +  and erect +
stout +  and slender +
mucilaginous +
winged +  and not winged +
uniseriate +  and biseriate +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
0.12 cm1.2 mm <br />0.0012 m <br /> (0.14 cm1.4 mm <br />0.0014 m <br />) +
not +  and mucilaginous +
white +, black +, brown +  and yellow +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (0.12 cm1.2 mm <br />0.0012 m <br />) +
persistent +  and caducous +
distinct +
oblong +  and linear-oblong +
0.6 cm6 mm <br />0.006 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
reduced +
latiseptate +, schizocarpic +, samaroid +  and lomentaceous +
indehiscent +  and dehiscent +
angustiseptate +, flat +, angled +, terete +, torulose +, not +, segmented +  and nutletlike +
tetradynamous +
branched +  and unbranched +
procumbent +  and decumbent +
subsessile +, sessile +  and petiolate +
persistent +
distinct +
cylindrical +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
Erysimum concinnum subsp. suffrutescens +  and Erysimum suffrutescens var. grandifolium +
Erysimum suffrutescens +
Erysimum +
species +
scale-like +  and forked +
coiled +, 1-7-veined +  and veined +
anastomosing +
perennial +, biennial +  and annual +
aquatics +  and terrestrial +